Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 8412 2016 | TECH METHODS AND STANDARDS (continued) Mortar and mortar coverage There was also language added to the MORTAR AND MORTAR COVERAGE section noting 100% mortar coverage is not practical. Many specifications call for 100% mortar cov- erage but this cannot be consistently attained and therefore it should not be specified. It has been well-established that mortar cure times are extended when impervious tile is installed over waterproof or crack-isolation membrane. To alert design professionals of this situation, language has been added to the SETTING MATERIAL SELECTION GUIDE. Other conditions that will also delay cure times are narrow grout joints and using high-per- formance grouts. Recommendations of extending turnover of the floor to traffic are given. Membrane selection guide Other language added pertaining to membranes is in the MEMBRANE SELECTION GUIDE. A new sub-subsection called “Considerations When Using Membranes” that not only ref- erences the above-noted extended cure times for mortars, but also the fact that the hollow sound of tile installed over membranes is normal and not indicative of loss of bond (without concomitant installation issues). Substrate requirements The last submission involved the continued discussion of the disparity between division 3 and division 9 floor flatness. The sectiononSUBSTRATEREQUIREMENTSgivesmanyreferencesto this. The language we submitted further clarifies this difference. One of the key points to note is when division 3 floor flatness (FF ) levels are specified, the floor must be verified to assure the spec- ified levels are attained. This may seem implied, but many times this test is not performed. Therefore it quickly becomes a source of tension for projects when it’s required to correct the floor to division 9 specifications, and the tile contractor requests to be compensated for the work. This also leads to another important addition to this section: recommendations for the design profes- sional to incorporate a separate allowance to correct the floor flatness from division 3 to division 9 specifications. As chairman of the Methods and Standards Committee, I want to thank its members, the gentlemen from Crossville and National Gypsum mentioned above, representatives from MAPEI, TEC and Bostik, and the TCNA staff for helping us with these submissions. Our next meeting with be October 22 at the Hyatt Regency Indian Wells Resort & Spa in Indian Wells, Calif., during Total Solutions Plus, October 22-25. If you have topics you feel would be appropriate for this committee to consider, you are welcome to contact me at kevin@foxceramictile.com High Quality Metal Trims and Pre-Molded Expansion Joints for all of Your Flooring Needs Carpet/Vinyl Trim Reducers Reverse Trim Ceramic Tool Call or click today! 800.236.5230 www.ceramictool.com Designers and manufacturers of superior quality anodized aluminum flooring transitions & custom stainless steel products MADE IN USA